Hilgardite, North Yorkshire, England, Thumbnail-Sized SpecimenApprox. Dimensions: Vary Approx. Weight: 12 grams Several small pieces of Hilgardite in pink and brown. Largely concretionary and porous pieces. Very delicate and light.

The remainder of the body is untarnished in silver and white

Weight:135 grams

Weight: 264 grams

The two largest crystals are attached to each other at ninety-degree angles

Dimensions:

Several larger octahedral crystals are scattered throughout

Specimen is topped with a subtle light green and has a streak of red on the white underside

The larger edge consists of one large rectangular mass

Dimensions:  2

Weight: 160 grams

the slender

White with clear edges and a glassy luster